Originally Posted by Herr Bauhaus

Although my headlights cracked differently, I got them replaced under warranty from BMW on my 08 X5 (built February 08) as there seemed to be a manufacturing error with them. A BMW factory rep came by my dealer and confirmed this although it was the first time the dealer heard of it. Given the outrageous cost for parts + labour ($2-3k easily) I say it is worth trying to get this replaced under warranty. It should be noted that mine cracked from the inside (you could see but feel no cracking from the outside) which meant it could not have been caused by road debris. Pics attached. Good luck.